Related Questions

In counter current flow heat exchanger, the logarithmic temperature difference between the fluids is ________ as compared to parallel flow heat exchanger.
A Same
B Less
C Greater
D None of these
Log mean temperature difference in case of counter flow compared to parallel flow will be
A Same
B More
C Less
D Depends on other factors
In the case of a shell and tube heat exchanger, the logarithmic mean temperature difference
A Is always less than arithmetic average value
B Is always more than arithmetic mean value and the geometric mean value
C Is always less than arithmetic mean value, but more than geometric mean value
D May be either more or less than geometric mean and arithmetic mean value depending upon whether the flow of stream is co-current or counter-current
In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is
A Minimum
B Maximum
C Zero
D Infinity
In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always
A [

A.

B. > 1

B 1
C ∞
Most air cooled condensers are designed to operate with a temperature difference of
A 5°C
B 8°C
C 14°C
D 22°C
LMTD in case of counter flow heat exchanger as compared to parallel flow heat exchanger is
A Higher
B Lower
C Same
D Depends on the area of heat exchanger
In counter flow compared to parallel flow,
A LMTD is greater
B Less surface area is required for a given heat transfer rate
C Both A and B
D More surface area is required for a given heat transfer rate
For লুপ এর গুরুত্বপূর্ণ অংশ- i. Counter initialization ii. Condition iii. Counter update নিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
For লুপ এর গুরুত্বপূর্ণ অংশ-i. Counter initialization ii. Condition iii. Counter update নিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii

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